lib/activitymover.php

   1 <?php
   2 /**
   3  * StatusNet - the distributed open-source microblogging tool
   4  * Copyright (C) 2010, StatusNet, Inc.
   5  *
   6  * Title of module
   7  *
   8  * PHP version 5
   9  *
  10  * This program is free software: you can redistribute it and/or modify
  11  * it under the terms of the GNU Affero General Public License as published by
  12  * the Free Software Foundation, either version 3 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU Affero General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Affero General Public License
  21  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  22  *
  23  * @category  Cache
  24  * @package   StatusNet
  25  * @author    Evan Prodromou <evan@status.net>
  26  * @copyright 2010 StatusNet, Inc.
  27  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
  28  * @link      http://status.net/
  29  */
  30
  31 if (!defined('STATUSNET')) {
  32     // This check helps protect against security problems;
  33     // your code file can't be executed directly from the web.
  34     exit(1);
  35 }
  36
  37 /**
  38  * Class comment
  39  *
  40  * @category  General
  41  * @package   StatusNet
  42  * @author    Evan Prodromou <evan@status.net>
  43  * @copyright 2010 StatusNet, Inc.
  44  * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
  45  * @link      http://status.net/
  46  */
  47 class ActivityMover extends QueueHandler
  48 {
  49     function transport()
  50     {
  51         return 'actmove';
  52     }
  53
  54     function handle($data)
  55     {
  56         list ($act, $sink, $userURI, $remoteURI) = $data;
  57
  58         $user   = User::getKV('uri', $userURI);
  59         try {
  60             $remote = Profile::fromUri($remoteURI);
  61         } catch (UnknownUriException $e) {
  62             // Don't retry. It's hard to tell whether it's because of
  63             // lookup failures or because the URI is permanently gone.
  64             // If we knew it was temporary, we'd return false here.
  65             return true;
  66         }
  67
  68         try {
  69             $this->moveActivity($act, $sink, $user, $remote);
  70         } catch (ClientException $cex) {
  71             $this->log(LOG_WARNING,
  72                        $cex->getMessage());
  73             // "don't retry me"
  74             return true;
  75         } catch (ServerException $sex) {
  76             $this->log(LOG_WARNING,
  77                        $sex->getMessage());
  78             // "retry me" (because we think the server might handle it next time)
  79             return false;
  80         } catch (Exception $ex) {
  81             $this->log(LOG_WARNING,
  82                        $ex->getMessage());
  83             // "don't retry me"
  84             return true;
  85         }
  86     }
  87
  88     function moveActivity($act, $sink, $user, $remote)
  89     {
  90         if (empty($user)) {
  91             // TRANS: Exception thrown if a non-existing user is provided. %s is a user ID.
  92             throw new Exception(sprintf(_('No such user "%s".'),$act->actor->id));
  93         }
  94
  95         switch ($act->verb) {
  96 /*        case ActivityVerb::FAVORITE:
  97             $this->log(LOG_INFO,
  98                        "Moving favorite of {$act->objects[0]->id} by ".
  99                        "{$act->actor->id} to {$remote->nickname}.");
 100             // push it, then delete local
 101             $sink->postActivity($act);
 102             $notice = Notice::getKV('uri', $act->objects[0]->id);
 103             if (!empty($notice)) {
 104                 $fave = Fave::pkeyGet(array('user_id' => $user->id,
 105                                             'notice_id' => $notice->id));
 106                 $fave->delete();
 107             }
 108             break;*/
 109         case ActivityVerb::POST:
 110             $this->log(LOG_INFO,
 111                        "Moving notice {$act->objects[0]->id} by ".
 112                        "{$act->actor->id} to {$remote->nickname}.");
 113             // XXX: send a reshare, not a post
 114             $sink->postActivity($act);
 115             $notice = Notice::getKV('uri', $act->objects[0]->id);
 116             if (!empty($notice)) {
 117                 $notice->deleteAs($user->getProfile(), false);
 118             }
 119             break;
 120         case ActivityVerb::JOIN:
 121             $this->log(LOG_INFO,
 122                        "Moving group join of {$act->objects[0]->id} by ".
 123                        "{$act->actor->id} to {$remote->nickname}.");
 124             $sink->postActivity($act);
 125             $group = User_group::getKV('uri', $act->objects[0]->id);
 126             if (!empty($group)) {
 127                 $user->leaveGroup($group);
 128             }
 129             break;
 130         case ActivityVerb::FOLLOW:
 131             if ($act->actor->id === $user->getUri()) {
 132                 $this->log(LOG_INFO,
 133                            "Moving subscription to {$act->objects[0]->id} by ".
 134                            "{$act->actor->id} to {$remote->nickname}.");
 135                 $sink->postActivity($act);
 136                 try {
 137                     $other = Profile::fromUri($act->objects[0]->id);
 138                     Subscription::cancel($user->getProfile(), $other);
 139                 } catch (UnknownUriException $e) {
 140                     // Can't cancel subscription if we don't know who to alert
 141                 }
 142             } else {
 143                 $otherUser = User::getKV('uri', $act->actor->id);
 144                 if (!empty($otherUser)) {
 145                     $this->log(LOG_INFO,
 146                                "Changing sub to {$act->objects[0]->id}".
 147                                "by {$act->actor->id} to {$remote->nickname}.");
 148                     $otherProfile = $otherUser->getProfile();
 149                     Subscription::ensureStart($otherProfile, $remote);
 150                     Subscription::cancel($otherProfile, $user->getProfile());
 151                 } else {
 152                     $this->log(LOG_NOTICE,
 153                                "Not changing sub to {$act->objects[0]->id}".
 154                                "by remote {$act->actor->id} ".
 155                                "to {$remote->nickname}.");
 156                 }
 157             }
 158             break;
 159         }
 160     }
 161
 162     /**
 163      * Log some data
 164      *
 165      * Add a header for our class so we know who did it.
 166      *
 167      * @param int    $level   Log level, like LOG_ERR or LOG_INFO
 168      * @param string $message Message to log
 169      *
 170      * @return void
 171      */
 172     protected function log($level, $message)
 173     {
 174         common_log($level, "ActivityMover: " . $message);
 175     }
 176 }